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Refresh (reset) Chrome and try Install again styles from userstyles.org.
Do not forget re-enable Stylus / xStyle after Refresh (reset).
Recently on firefox I discovered that the add-on Chameleon blocked the correct operation of Stylus / xStyle.
You guys DO know they gather your browser history and send it to a remote server, right?
"Welcome back to the land of the living, my friend. You have slept for quite some time."